9-1
BLOCK DIAGRAMS < LCD TV SECTION >
System Control Block Diagram
L3150BLS
FUNCTION CB
A
KEY
-IN-1
22
CLN104
KEY SWITCH
KEY
-IN-2
11
BA
CKLIGHT
-SW
BA
CKLIGHT
-ADJ
T
O
LCD BA
CKLIGHT
BLOCK DIA
GRAM
KEY SWITCH
IC333
(TV MICR
O CONTR
O
LLER)
3
21
CN104
11
KEY
-IN-1
RCV
-IN
RESET
RESET
IC151
AL+3.3V(D)
AL+3.3V(D)
42
43
X161
27MHz
XIN
XOUT
MAIN CB
A
LCD MAIN CB
A UNIT
4
KEY
-IN-2
22
18
17
BA
CKLIGHT
-SW
19
5
BA
CKLIGHT
-ADJ
21
3
P-ON-H
16
8
V
O
LUME
15
9
A
UDIO-MUTE
13
11
INPUT
-0
12
12
INPUT
-1
11
13
S-SW
71
7
SCL
61
8
SD
A
51
9
P-ON-H
V
OLUME
A
U
DIO-MUTE
SD
A
SCL
INPUT
-0
INPUT
-1
S-SW
SCL
SD
A
20
35
31
40
19
32
41
T
O
PO
WER SUPPL
Y
BLOCK DIA
GRAM
T
O
IF/VIDEO
BLOCK DIA
GRAM
T
O
A
UDIO
BLOCK DIA
GRAM
BA
CKLIGHT
-SW
BA
CKLIGHT
-ADJ
P-ON-H
V
O
LUME
A
UDIO-MUTE
INPUT
-0
INPUT
-1
S-SW
SCL
SD
A
CN102B
CN102A
SD
A
2
SCL
1
CN112
(NO CONNECTION)
IC171
(MEMOR
Y)
SCL
6
SD
A
5
7
WP
B
U
S-OPEN
4
NO PART
MOUNTED
FOR CN112
P-ON-H2(NU)
14
10
16
P-ON-H2
12
P-25V
-ON
P-25V
-ON
T
O
PO
WER
SUPPL
Y
BLOCK
DIA
GRAM
AFT
-IN
10
14
5
AFT
-IN
80
TUNERCLK
Q301
B
UFFER
AFT
-IN
FSC
FSC
12
3
B
U
S-OPEN
51
9
CN103B
CN103A
CN113
(NO CONNECTION)
SD
A
2
SCL
1
B
U
S-OPEN
4
CN113 IS USED
FOR ADJUSTMENT
AT FACTORY
REMO
TE
SENSOR
RCV101
RCV
-IN
66
P-ON-H
4
5
26
D
VD-MAIN-PO
WER
D
VD-MAIN-PO
WER
Q131
3.3V<-->5V
CONVER
TER
34
D
VD-MUTE
23
B
US-OPEN
D
VD-MUTE
23
1
D
VD-PWR-CON
18
6
D
VD-MUTE
D
V
D-PWR-CON
T
O
SYSTEM
CONTR
OL / SER
V
O
BLOCK DIA
GRAM
<D
VD SECTION>
D
VD-PWR-CON
FP-DIN
FP-CLK
S
D
ATA
REMO
TE
TREDCONTV
DISC-OUT
DISC-IN
24
27
37
33
36
39
25
D
VD-CS
D
V
D-SIN
REMO
TE-OUT
D
VD-IRCONT
DISC-OUT
DISC-IN
D
V
D-SCLK